for me, it makes no different in anyway mine's or the bloke next door did my exhaust, gauge, injector, even bolt the turbo on.
even the car been tuned by mine's it is still nothing special (no offence at all)
it's only a mild tune car and anyone can do the same thing
Mine's is a workshop after all
if yr car been throw in 100g and the work been done by mine's, then it makes a different cos they know what they are doing at hard tune